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Finding the Fourth Proportional to 494,291.70, 741,437.55 and 292,212.90

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Solution

The fourth proportional to 494,291.70, 741,437.55 and 292,212.90 is: 438,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,291.70 : 741,437.55 = 292,212.90 : x
  2. Step 2: Convert to fraction form
    494,291.70/741,437.55 = 292,212.90/x
  3. Step 3: Cross multiply
    494,291.70x = 741,437.55 × 292,212.90
  4. Step 4: Simplify right side
    494,291.70x = 216,657,616,654.40
  5. Step 5: Solve for x
    x = 216,657,616,654.40/494,291.70
  6. Step 6: Final answer
    x = 438,319.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.